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v3.19.3

Commitments and Contingencies (Details) $ in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2018 CAD ($) | Sep. 30, 2017 USD ($)
Loss Contingency, Damages Sought, Value |  |  |  | $ 10.0 |
Income Tax Examination, Penalties and Interest Expense |  | $ 22.0 |  |  |
Loss Contingency, Estimated Recovery from Third Party |  | 17.0 |  |  |
Walter Tax Liability |  | $ 22.0 | $ 0.0 |  |
Document Period End Date |  | Sep. 30, 2019 |  |  |
Product Warranty Expense |  | $ 3.9 | 18.7 |  | $ 12.3
Operating Leases |  |  |  |  |
Rent expense |  | 5.8 | 6.4 |  | 5.8
Future minimum payment under non-cancelable operating leases, CY Plus 1 |  | 6.1 |  |  |
Future minimum payment under non-cancelable operating leases, CY Plus 2 |  | 5.1 |  |  |
Future minimum payment under non-cancelable operating leases, CY Plus 3 |  | 4.2 |  |  |
Future minimum payment under non-cancelable operating leases, CY Plus 4 |  | 3.8 |  |  |
Future minimum payment under non-cancelable operating leases, CY Plus 5 |  | 3.7 |  |  |
Future minimum payment under non-cancelable operating leases, CY plus 6 and up |  | $ 15.8 |  |  |
IRS-Walter Energy Claim 1 Total [Member] |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 554.3 |  |  |  |
IRS-Walter Energy Claim 1 Priority [Member] |  |  |  |  |
Loss Contingency, Damages Sought, Value | 229.1 |  |  |  |
IRS-Walter Energy Claim 2 [Member] |  |  |  |  |
Loss Contingency, Damages Sought, Value | 860.4 |  |  |  |
IRS-Walter Energy Claim 2 Priority [Member] |  |  |  |  |
Loss Contingency, Damages Sought, Value | $ 535.3 |  |  |  |
Product Concentration Risk [Member] |  |  |  |  |
Product Warranty Expense |  |  | $ 14.1 |  | $ 9.8

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